Sighting Report by Lieutenant R. Svanström — Rosersberg, August 1946

On August 13, 1946, Lieutenant R. Svanström of the Infanteriskjutskolan (Infantry Firing School) submitted a formal report regarding an aerial observation made during the night of August 12-13, 1946. At 00:15, Svanström observed an object in the sky that he described as a powerful light in the form of a tail. The object was moving at a high altitude, traveling from the south-southeast toward the north-northwest. The observation lasted only a few seconds. Svanström noted that he heard no sound, and the object disappeared suddenly without any accompanying noise or explosion. He was standing alone in the courtyard of the castle at Rosersberg at the time, ensuring he was not distracted by other ambient sounds. Svanström explicitly stated that he could not determine with certainty whether the object was a shooting star or a projectile, but he chose to file the report in the event that others had witnessed the same phenomenon, suggesting his account might be of value.